Documentation dependency `quartodoc` mixed with main dependencies

[ptamarit]

Hello,

We are using commonmeta-py in inveniosoftware/invenio-rdm-records and started running into problems with v0.9.x v0.8.7.

The problem is related to the fact that quartodoc (a documentation dependency), is listed as a main dependency: https://github.com/front-matter/commonmeta-py/blob/a610c1c255f24d6095e9e564a55ead866f3753a8/pyproject.toml#L39-L41

The proper way to define such dependencies according to the Poetry documentation is:

[tool.poetry.group.docs]
optional = true

[tool.poetry.group.docs.dependencies]
# Docs deps here...

Do you think you could release a new version with these dependencies out of the main list?

Thanks, Pablo

[mfenner]

Addressed this via e939b70.